SR

Full-stack development services

Whether you need a complete SaaS product, a scalable backend, or a fast MVP, you get one senior engineer accountable for the result, with a written scope and a fixed price.

Product builds

Full-Stack Web Application Development

Complete web applications (modern frontend, robust backend, database and cloud deployment) delivered as one accountable engagement.

Details, deliverables & FAQ
  • Responsive Next.js/React frontend with Tailwind CSS
  • TypeScript REST or GraphQL API built on NestJS
  • PostgreSQL / MongoDB schema design and migrations
  • Authentication, roles and permissions (JWT / OAuth)

SaaS Product Development

Multi-tenant SaaS platforms with subscription billing, analytics and infrastructure designed to scale from first customer to thousands.

Details, deliverables & FAQ
  • Multi-tenant data model and access control
  • Stripe / SSLCommerz subscription billing, invoices and webhooks
  • Onboarding flows, team management and role-based access
  • Background job processing (queues, schedulers, email/SMS notifications)

MVP Development for Startups

A focused, launch-ready product in 4-8 weeks, built on a foundation that will not need rewriting when you find traction.

Details, deliverables & FAQ
  • Discovery workshop and written scope with milestones
  • Core user flows, authentication and payments
  • Admin panel and basic analytics
  • Deployed staging and production environments

Backend, integrations and AI

Backend & API Development (Node.js / NestJS)

Scalable REST APIs, microservices and real-time systems in TypeScript. The core competence behind everything else I build.

Details, deliverables & FAQ
  • REST API design with OpenAPI/Swagger documentation
  • NestJS modules, guards, validation and testing
  • Microservices and event-driven architecture (queues, pub/sub)
  • Real-time features with WebSockets / Socket.IO

API Integration & Workflow Automation

Connect payments, CRMs, project tools and custom APIs so data flows automatically and your team stops doing manual work.

Details, deliverables & FAQ
  • Payment gateway integration (Stripe, SSLCommerz, bKash)
  • CRM / project-tool sync (HubSpot, Jira, Asana, Trello, Slack)
  • Webhook receivers with retry, idempotency and monitoring
  • Zapier / Make custom apps and scheduled jobs

AI & LLM Integration (RAG, Chatbots, Automation)

Practical AI features on top of your own data (RAG search, support assistants and LLM automation), engineered for accuracy and cost control.

Details, deliverables & FAQ
  • RAG pipeline: chunking, embeddings, pgvector search, re-ranking
  • Chat assistants with streaming responses and conversation memory
  • LLM-powered classification, extraction and summarisation jobs
  • Prompt management, evaluation and cost monitoring

Not sure which service you need?

Describe the problem and I'll tell you the simplest path to solving it, even if that means less work than you expected.

  • No obligation
  • Reply within 24 hours
  • NDA on request